新型杀线剂对甘薯腐烂茎线虫的防治效果  

Control efficacy of new nematicides to Ditylenchus destructor ofsweet potato

作　　者：陈昆圆 焦永吉 王毓琦 李荣超 周扬 蒋士君[1] 周琳[1] 杨志辉[3] 崔江宽 CHEN Kunyuan;JIAO Yongji;WANG Yuqi;LI Rongchao;ZHOU Yang;JIANG Shijun;ZHOU Lin;YANG Zhihui;CUI Jiangkuan(College of Plant Protection,Henan Agricultural University,Zhengzhou 450002,China;Henan Plant Protection and Quarantine Station,Zhengzhou 450002,China;College of Plant Protection,Hebei Agricultural University,Baoding 071000,Hebei,China)

机构地区：[1]河南农业大学植物保护学院,郑州450002 [2]河南省植物保护检疫站,郑州450002 [3]河北农业大学植物保护学院,河北保定071000

出　　处：《农药》2023年第11期838-843,共6页Agrochemicals

基　　金：国家重点研发计划(2023YFD1400013);河南省重大科技专项(221100110100);河北省薯类产业技术体系创新团队专项基金资助(HBCT2023060205)。

摘　　要：[目的]筛选出且并对甘薯腐烂茎线虫高效低毒、低残留的药剂。[方法]采用浸渍法测定了9种药剂在3个不同质量浓度下对甘薯腐烂茎线虫的生物活性,在此基础上选择5种触杀活性较好的药剂进行盆栽防治试验。[结果]生物活性测定结果表明:45%三氟吡啶胺SC、5%阿维菌素EC、5%噻唑膦WG、42%威百亩SC和4.5%寡糖·噻唑膦GR对甘薯腐烂茎线虫的触杀效果较好,72 h校正防效均超过了50%;盆栽试验结果表明:45%三氟吡啶胺SC 150 mg/L处理45 d虫口减退率最高,达68.23%,其次是5%噻唑磷WG 1500 mg/L处理45 d,虫口减退率为60.03%,42%威百亩SC 6250 mg/L处理虫口减退率最低,仅为16.36%。[结论]45%三氟吡啶胺SC和5%噻唑磷WG对甘薯腐烂茎线虫的触杀活性和盆栽防治效果较好,具备良好的田间应用前景。[Aims]This study aims to screen out the pesticides with low toxicity,low residue and high efficiency to Ditylenchus destructor.[Methods]The biological activity of 9 pesticides at 3 different concentrations to D.destructor was determined by dipping method.On this basis,5 pesticides with better insecticidal activity were selected for pot test.[Results]The results of biological activity test showed that cyclobutrifluram 45%SC,abamectin 5%EC,fosthiazate 5%WG,metam-sodium 42%SC and oligosaccharins·fosthiazate 4.5%GR had better contact poisoning activity against D.destructor,and the corrected control effect in 72 h exceeded 50%.The results of pot test showed that the D.destructor populat ion decline rate of cyclobutrifluram 45%SC at 150 mg/L(68.23%)was the highest on day 45,followed by fosthiazate at 1500 mg/L(60.03%),and the population decline rate of metam-sodium 42%SC at 6250 mg/L(16.36%)was the lowest.[Conclusions]Cyclobutrifluram 45%SC and fosthiazate 5%WG with good contact poisoning activity and pot control effect on D.destructor,had good field application prospects.

关 键 词：甘薯腐烂茎线虫 杀线剂 三氟吡啶胺 噻唑磷 氟吡菌酰胺 

分 类 号：S482.2[农业科学—农药学]